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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






2. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






3. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






4. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






5. Luteolysis happens because of the ____________ hormone






6. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.

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7. When are steers and heifers weaned from bottle feeding?






8. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






9. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






10. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






11. Milk ~305 days - dry 60 days prior to calving






12. Provide nourishment for the developing sperm






13. ~60 days before calving






14. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






15. 30-38 hours after estrus cycle begins






16. Contains and regulates the temp of the testes for sperm production






17. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.






18. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






19. Duct through penis that carries sperm and urine






20. Why Dairy calves are fed powdered milk.






21. Start of the reproductive tract for the female. located outside of the body






22. (LH) causes female's egg to break (her period)






23. Sperm production






24. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






25. % of fat in milk. makes cheeses and ice cream. regulates cost of milk






26. Failure to have one testis (gonad) to descend






27. Not under a timeline - cow can not be sold as steak






28. (male) pushes the testes outward toward the legs for a cool-down off of the body






29. Help to signal hormone levels which we need both in the brain right next to each other.






30. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






31. Important 'landmark' during palpation






32. Animals which have many estrous periods per year (ex: cow - sow)






33. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






34. Depository for semen during insemination. where urine leaves the body






35. Actual heat cycle (period)






36. Milk ~305 days - dry 60 days prior to calving






37. Way to know everything is alright with the breeding male






38. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






39. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






40. Failure to have both testis (gonads) descend






41. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)






42. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)






43. 4-6 days






44. 30-38 hours after estrus cycle begins






45. 336 days






46. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






47. Not under a timeline - cow can not be sold as steak






48. Days which have increasing daylight hours

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49. (LH) causes female's egg to break (her period)






50. Animal which has been castrated after puberty